Fire in Fountain Valley, Orange County: Blaze erupts near Costco, close to Costa Mesa
A fire broke out near a Costco store in Fountain Valley, Orange County, about six miles from Costa Mesa, on Sunday.
UPDATE: A witness told Hindustan Times that the fire in Fountain Valley, Orange County, has been extinguished. The witness also shared a video taken from the 405 freeway near Fountain Valley, which shows lingering smoke but no visible flames.

ORIGINAL STORY: A large fire has broken out near a Costco store in Fountain Valley, Orange County, about six miles from Costa Mesa. Photos and videos on social media show thick smoke coming from a building. Some residents reported hearing loud explosions before seeing the smoke, according to OC Scanner. A second alarm has been called. Witnesses say the fire started in a warehouse, but officials have not confirmed this. The cause of the fire is still unknown.
Witness reports
Several local residents and witnesses took to social media to report the fire.
One person wrote on X, “Possible Orange USAR1 and other Huntington engines on scene. I can see the fire from my house."
Another wrote, “Structure fire on Talbert in Fountain Valley across from Costco.”
A third person reported, “Fire going in Fountain Valley, Ca. Can see it from the bedroom window.”
Santa Ana Fire Earlier in the Day
The Fountain Valley blaze comes just hours after a massive fire broke out in the outside storage area of a commercial property in Santa Ana, also in Orange County.
According to the Orange County Fire Authority (OCFA), crews responded quickly and knocked the fire down before it could spread to nearby buildings. No injuries were reported, and the cause is under investigation.
Orange County Fire Authority posted on Facebook: “Earlier this afternoon, firefighters responded to a fire in the outside storage area of a commercial property in Santa Ana. Crews arrived to find a large volume of fire involving a collection of recyclable materials. The blaze was quickly knocked down before it had a chance to spread to adjacent buildings, containing the fire to the outside storage area.”
ABOUT THE AUTHORVaishnavi VaidyanathanVaishnavi Vaidyanathan leads the US Desk at Hindustan Times, where she writes, strategises coverage, and ensures quality across all beats. With eight years of experience covering US news for leading publications, she has reported extensively on politics, entertainment, and sports. Vaishnavi holds a graduate degree in English, Journalism, and Psychology, and completed her PG Diploma in Broadcast Journalism from the Manorama School of Communication, where she was awarded the prestigious Mammen Mappillai Award for Best Outgoing Student. She began her career at the International Business Times (US Edition), covering US breaking news, politics, and entertainment. She later joined Opoyi, reporting across all beats, including US sports and trending stories. Prior to Hindustan Times, she served as World Lead at Times Now News, covering comprehensive world news and events. Vaishnavi has expertise in politics, entertainment, and breaking news, and enjoys tackling stories across a wide range of topics. Beyond the newsroom, she is an avid traveller, a foodie who loves exploring new restaurants, and a pop culture enthusiast who enjoys watching latest shows and films. She also enjoys engaging in debates and discussions on Reddit.Read More

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